How to solve the LED light failure problem

LED lights decay the key issue is the temperature, but LED street lights usually fail in this part. LED street light because of the luminous power is greater than the household lamps, so manufacturers in the cooling of the substrate fins, cooling module design painstakingly, the assembly is comple ......

Gold-copper ore sorting characteristics

Gold - Copper Ore divided into two kinds of oxide ore and sulfide ore. In the sulfide ore, the primary metal minerals chalcopyrite, pyrite. Addition arsenopyrite, pyrrhotite, chalcocite, bornite like; gangue minerals are quartz, sericite, feldspar and the like. Gold and chalcopyrite have a close rel ......